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3 years ago

12

The alpha decay of iridium-174

1 answer:

777dan777 [17]3 years ago

8 0

The answer is 174Ir→4He+170Re

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What inorganic molecule is carbon normally found in?

DiKsa [7]

It’s CO2

Carbon dioxide

6 0

3 years ago

3. The following data of decomposition reaction of thionyl chloride (SO2Cl2) were collected at a certain temperature and the con

KonstantinChe [14]

Answer:

a) First-order.

b) 0.013 min⁻¹

c) 53.3 min.

d) 0.0142M

Explanation:

Hello,

In this case, on the attached document, we can notice the corresponding plot for each possible order of reaction. Thus, we should remember that in zeroth-order we plot the concentration of the reactant (SO2Cl2 ) versus the time, in first-order the natural logarithm of the concentration of the reactant (SO2Cl2 ) versus the time and in second-order reactions the inverse of the concentration of the reactant (SO2Cl2 ) versus the time.

a) In such a way, we realize the best fit is exhibited by the first-order model which shows a straight line (R=1) which has a slope of -0.0013 and an intercept of -2.3025 (natural logarithm of 0.1 which corresponds to the initial concentration). Therefore, the reaction has a first-order kinetics.

b) Since the slope is -0.0013 (take two random values), the rate constant is 0.013 min⁻¹:

$m=\frac{ln(0.0768)-ln(0.0876)}{200min-100min} =-0.0013min^{-1}$

c) Half life for first-order kinetics is computed by:

$t_{1/2}=\frac{ln(2)}{k}=\frac{ln(2)}{0.013min^{-1}} =53.3min$

d) Here, we compute the concentration via the integrated rate law once 1500 minutes have passed:

$C=C_0exp(-kt)=0.1Mexp(-0.013min^{-1}*1500min)\\\\C=0.0142M$

Best regards.

6 0

4 years ago

Which one is ittt? help please:)

Alexus [3.1K]

Answer:

b

Explanation:

4 0

3 years ago

Be sure to answer all parts. provide stepwise mechanisms illustrating how each product is formed by choosing, in order, the step

SpyIntel [72]

Answer:

Explanation:

find the solution below

8 0

3 years ago

Determine the wavelength of the energy that needs to be absorbed for a 3p electron in chlorine to be promoted to the 4s subshell

bazaltina [42]

Answer:

The wavelength of the energy that needs to be absorbed = 52.36 nm

Explanation:

For this study;

Let consider the Rydgberg equation from Bohr's theory of atomic model:

i.e.

$\dfrac{1}{\lambda} = R_H (Z^*)^2( \dfrac{1}{n_1^2}-\dfrac{1}{n_2^2})$

where

Z* = effective nuclear charge of atom = Z - σ = 6

n₁ = lower orbit = 3

n₂ = higher orbit = 4

$R_H$ = Rydyberg constant = 1.09 × 10⁷ m⁻¹

λ = wave length of the light absorbed

∴

$\dfrac{1}{\lambda} = 1.09 \times 10^7}(6)^2( \dfrac{1}{3^2}-\dfrac{1}{4^2})$

$\dfrac{1}{\lambda} = 1.09 \times 10^7}(36)( \dfrac{1}{9}-\dfrac{1}{16})$

$\dfrac{1}{\lambda} = 392400000\times0.0486111111$

$\dfrac{1}{\lambda} =19075000$

$\lambda = \dfrac{1}{19075000}$

$\lambda = \dfrac{1}{1.91\times 10^7 \ m^{-1}}$

$\lambda = 5.236 \times 10^{-8} m$

$\lambda = 52.36 \times 10^{-9} m$

$\lambda = 52.36\ n m$

Therefore, the wavelength of the energy that needs to be absorbed = 52.36 nm

7 0

3 years ago